IHydroxypropylmethylcellulose (HPMC) iphuma ku-cellulose evame ukusetshenziswa ezimbonini ezahlukahlukene namuhla. Isetshenziswa kakhulu njenge-thickener, i-adhesive kanye ne-stabilizer ekudleni, kwezokwelapha kanye nezimboni zezimonyo. Ikhethwa ngaphezu kwezinye izinketho ngoba kulula ukuyisebenzisa, iphephile futhi ayinabo ubuthi. Nokho, isici esibalulekile saleli khemikhali umlotha walo.
Okuqukethwe komlotha we-HPMC kuyisici esibalulekile ekunqumeni ikhwalithi nobumsulwa bayo. Okuqukethwe komlotha kubhekise ezintweni ezimaminerali nezingaphili ezikhona kokuphuma kokunye ku-cellulose. Lawa maminerali angaba khona ngamanani amancane noma amakhulu, kuye ngomthombo kanye nekhwalithi ye-HPMC.
Okuqukethwe komlotha kunganqunywa ngokushisa inani elithile le-HPMC ezingeni lokushisa eliphezulu ukuze kukhishwe yonke into ephilayo, kusale kuphela izinsalela ezingaphili. Okuqukethwe komlotha we-HPMC kufanele kube phakathi kwebanga elamukelekayo ukuze kugwenywe ukungcoliswa okungase kube khona futhi kuqinisekiswe ukuthi izakhiwo zayo ezibonakalayo namakhemikhali azithinteki.
Okuqukethwe komlotha okwamukelekayo kwe-HPMC kuyehluka kuye ngemboni osetshenziswa kuyo. Isibonelo, imboni yezokudla inemithetho eqinile mayelana nobuningi bokuqukethwe komlotha okuvunyelwe ku-HPMC. Okuqukethwe komlotha webanga lokudla i-HPMC kumele kube ngaphansi kuka-1%. Ukusetshenziswa komuntu kwanoma iyiphi into engaphezu kwalo mkhawulo kubangela ingozi empilweni. Ngakho-ke, kubalulekile ukuqinisekisa ukuthi i-HPMC yebanga lokudla inomlotha olungile.
Ngokunjalo, imboni yezemithi inemithethonqubo mayelana nokuqukethwe komlotha we-HPMC. Umlotha ovumelekile kufanele ube ngaphansi kuka-5%. Noma iyiphi i-HPMC esetshenziswa embonini kufanele ibe nobumsulwa noma ikhwalithi efanele ukugwema ukungcoliswa.
Abakhiqizi bezimonyo futhi badinga i-HPMC yekhwalithi ephezulu enokuqukethwe komlotha okufanele. Lokhu kungenxa yokuthi noma yikuphi okuqukethwe komlotha okweqile ku-HPMC kungase kusabelane nezinye izithako ezikwizimonyo, kubangele imiphumela emibi emzimbeni namakhemikhali esikhumbeni.
Okuqukethwe komlotha we-HPMC kufanele kube ngaphakathi kwemikhawulo eyamukelekayo embonini ngayinye esetshenziswa kuyo. Nokho, akwanele ukwahlulela ikhwalithi ye-HPMC kuphela ngokuqukethwe komlotha. Ezinye izici ezifana ne-viscosity, i-pH kanye nomswakama wokuqukethwe nakho kudlala indima ebalulekile ekunqumeni ikhwalithi yayo yonke.
I-HPMC enokuqukethwe komlotha okulungile kunezinzuzo ezimbalwa. Iqinisekisa ukuhlanzeka komkhiqizo kanye nekhwalithi, inciphisa ingozi yokungcola futhi ithuthukise ukuphepha komkhiqizo. Lokhu kwenza kube lula kubakhiqizi ukuthi bahlangabezane namazinga okulawula embonini ngayinye.
Okuqukethwe komlotha we-hydroxypropyl methylcellulose kuyisici esibalulekile sokuqinisekisa ikhwalithi nokuphepha komkhiqizo. Ukuqinisekisa ukuthi i-HPMC inomlotha olungile womkhakha ngamunye osetshenziswayo kubalulekile. Abakhiqizi kufanele futhi basebenzise ama-HPMC ekhwalithi ephezulu yokuhlanzeka okufanele futhi baqinisekise ukuthi bayahlangabezana namazinga omkhakha. Ngokuqukethwe komlotha okulungile, i-HPMC izoqhubeka nokuba yisithako esibalulekile ezimbonini ezihlukahlukene.
Isikhathi sokuthumela: Aug-30-2023